Hiya

I've written a COM server/client using a dispatch interface.
It seems to be working fine so far, the I've come across
a problem when I want to pass a block of binary data
between the server and client.

I can't use a custom interface since it's important for me
to support languages like VB/VBA.  I've seen solutions
that use horribly complicated workarounds
(http://codeguru.earthweb.com/atl/BufferVariant.html),
but I can't belive there isn't an easier way.

Can't you pass eg. a reference to a Byte array, or use
a BSTR?  The latter includes a length count, so in
theory it can contain binary data.

Thanks for any suggestions,

 --
C-YA
Jon

<http://www.witchspace.com>

Hi Jon,

yes a BSTR can be used to pass binary data - as you say it has a length count.

I'm not sure however, how well this is handled by Visual Basic.  You may want to
write a little test program to check it out.

Phil.

On 23 Mar 2001 06:50:47 -0800, "Jonathan Belson" <j...@witchspace.com> wrote:

Just found out that it won't work 8^(  Check out
"Passing Structures in OLE Automation", PSS ID Number: Q122289

Does anyone have any other suggestions?

--
C-YA
Jon

<http://www.witchspace.com>